Search Results - "Velde, Oscar van der"

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  1. 1

    Gigantic jet discharges evolve stepwise through the middle atmosphere by van der Velde, Oscar A., Montanyà, Joan, López, Jesús A., Cummer, Steven A.

    Published in Nature communications (25-09-2019)
    “…In 2002 it was discovered that a lightning discharge can rise out of the top of tropical thunderstorms and branch out spectacularly to the base of the…”
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    Spatio-temporal dimension of lightning flashes based on three-dimensional Lightning Mapping Array by López, Jesús A., Pineda, Nicolau, Montanyà, Joan, Velde, Oscar van der, Fabró, Ferran, Romero, David

    Published in Atmospheric research (01-11-2017)
    “…3D mapping system like the LMA - Lightning Mapping Array - are a leap forward in lightning observation. LMA measurements has lead to an improvement on the…”
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    Gigantic jets produced by an isolated tropical thunderstorm near Réunion Island by Soula, Serge, van der Velde, Oscar, Montanya, Joan, Huet, Patrice, Barthe, Christelle, Bór, József

    Published in Journal of Geophysical Research (04-10-2011)
    “…Five gigantic jets (GJs) have been recorded with video and photograph cameras on 7 March 2010 above an isolated tropical storm east of Réunion Island. Three of…”
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    Statistics and variability of the altitude of elves by Velde, Oscar A., Montanyà, Joan

    Published in Geophysical research letters (28-05-2016)
    “…From June 2008 to January 2016 nearly 800 elves have been recorded by a low‐light camera in northeastern Spain. Elves occur in this region mainly over the…”
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    Polarimetric radar characteristics of lightning initiation and propagating channels by Figueras i Ventura, Jordi, Pineda, Nicolau, Besic, Nikola, Grazioli, Jacopo, Hering, Alessandro, van der Velde, Oscar A, Romero, David, Sunjerga, Antonio, Mostajabi, Amirhossein, Azadifar, Mohammad, Rubinstein, Marcos, Montanya, Joan, Germann, Urs, Rachidi, Farhad

    Published in Atmospheric measurement techniques (27-05-2019)
    “…In this paper we present an analysis of a large dataset of lightning and polarimetric weather radar data collected in the course of a lightning measurement…”
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    Observations of the relationship between sprite morphology and in-cloud lightning processes by VAN DER VELDE, Oscar A, MIKA, Agnes, SOULA, Serge, HALDOUPIS, Christos, NEUBERT, Torsten, INAN, Umran S

    Published in Journal of Geophysical Research (16-08-2006)
    “…During a thunderstorm on 23 July 2003, 15 sprites were captured by a LLTV camera mounted at the observatory on Pic du Midi in the French Pyrénées. Simultaneous…”
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    Analysis of the first gigantic jet recorded over continental North America by van der Velde, Oscar A., Lyons, Walter A., Nelson, Thomas E., Cummer, Steven A., Li, Jingbo, Bunnell, James

    “…Two low‐light cameras near Marfa, Texas, recorded a gigantic jet over northern Mexico on 13 May 2005 at approximately 0423:50 UTC. Assuming that the farthest…”
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    The start of lightning: Evidence of bidirectional lightning initiation by Montanyà, Joan, van der Velde, Oscar, Williams, Earle R.

    Published in Scientific reports (16-10-2015)
    “…Lightning flashes are known to initiate in regions of strong electric fields inside thunderstorms, between layers of positively and negatively charged…”
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    Characteristics of lightning related to wildfire ignitions in Catalonia by Pineda, Nicolau, Montanya, Joan, van der Velde, Oscar A

    Published in Atmospheric research (01-01-2014)
    “…What are the characteristics of lightning that influence the probability that an individual stroke will ignite a wildfire? It is generally accepted that long…”
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    Charge structure analysis of a severe hailstorm with predominantly positive cloud-to-ground lightning by Pineda, Nicolau, Rigo, Tomeu, Montanyà, Joan, van der Velde, Oscar A.

    Published in Atmospheric research (01-09-2016)
    “…The present study makes use of cloud-to-ground lightning, three-dimensional mapping from a Lightning Mapping Array and Doppler C-band radar observations to…”
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    Global distribution of winter lightning: a threat to wind turbines and aircraft by Montanyà, Joan, Fabró, Ferran, van der Velde, Oscar, March, Víctor, Williams, Earle Rolfe, Pineda, Nicolau, Romero, David, Solà, Glòria, Freijo, Modesto

    Published in Natural hazards and earth system sciences (21-06-2016)
    “…Lightning is one of the major threats to multi-megawatt wind turbines and a concern for modern aircraft due to the use of lightweight composite materials. Both…”
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    Imaging of 3 bright terrestrial gamma-ray flashes by the atmosphere-space interactions monitor and their parent thunderstorms by van der Velde, Oscar A., Navarro-González, Javier, Fabró, Ferran, Reglero, Víctor, Connell, Paul, Chanrion, Olivier, López, Jesús A., Montanyà, Joan, Neubert, Torsten, Østgaard, Nikolai

    Published in Scientific reports (23-03-2024)
    “…The Atmosphere-Space Interactions Monitor (ASIM) on the International Space Station (ISS) includes an instrument designed to geolocate Terrestrial Gamma-ray…”
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    Asymmetries in bidirectional leader development of lightning flashes by van der Velde, Oscar A., Montanyà, Joan

    “…Lightning flashes develop as a bidirectional tree, with a negative and a positive end propagating simultaneously into cloud charges of the opposite polarity…”
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    Analysis of global Terrestrial Gamma Ray Flashes distribution and special focus on AGILE detections over South America by Fabró, Ferran, Montanyà, Joan, Marisaldi, Martino, van der Velde, Oscar A., Fuschino, Fabio

    “…Global distribution of the Terrestrial Gamma-ray Flashes (TGFs) detected by AGILE and RHESSI for the period from March 2009 to July 2012 has been analysed. A…”
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    Multi-instrumental observations of a positive gigantic jet produced by a winter thunderstorm in Europe by van der Velde, Oscar A., Bór, József, Li, Jingbo, Cummer, Steven A., Arnone, Enrico, Zanotti, Ferruccio, Füllekrug, Martin, Haldoupis, Christos, NaitAmor, Samir, Farges, Thomas

    “…At 2336:56 UTC on 12 December 2009, a bright gigantic jet (GJ) was recorded by an observer in Italy. Forty‐nine additional sprites, elves, halos and two cases…”
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    Lightning development associated with two negative gigantic jets by Lu, Gaopeng, Cummer, Steven A., Lyons, Walter A., Krehbiel, Paul R., Li, Jingbo, Rison, William, Thomas, Ronald J., Edens, Harald E., Stanley, Mark A., Beasley, William, MacGorman, Donald R., van der Velde, Oscar A., Cohen, Morris B., Lang, Timothy J., Rutledge, Steven A.

    Published in Geophysical research letters (21-06-2011)
    “…We report observations of two negative polarity gigantic jets sufficiently near very high‐frequency (VHF) lightning mapping networks that the associated…”
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